private void OnNavigateLink(object sender, ExecutedRoutedEventArgs e)
{
if (this.LinkNavigator != null)
{
Uri uri;
string parameter;
string targetName;
if (NavigationHelper.TryParseUriWithParameters(e.Parameter, out uri, out parameter, out targetName))
{
this.LinkNavigator.Navigate(uri, e.Source as FrameworkElement, parameter);
}
}
}
private void OnCanNavigateLink(object sender, CanExecuteRoutedEventArgs e)
{
// true by default
e.CanExecute = true;
if (this.LinkNavigator != null && this.LinkNavigator.Commands != null)
{
// in case of command uri, check if ICommand.CanExecute is true
Uri uri;
string parameter;
string targetName;
// TODO: CanNavigate is invoked a lot, which means a lot of parsing. need improvements??
if (NavigationHelper.TryParseUriWithParameters(e.Parameter, out uri, out parameter, out targetName))
{
ICommand command;
if (this.LinkNavigator.Commands.TryGetValue(uri, out command))
{
e.CanExecute = command.CanExecute(parameter);
}
}
}
}
